Experiment | Dose | n | Gestational age | ir-ACTH | ir-cortisol |
---|---|---|---|---|---|
days | pg/ml | ng/ml | |||
i.v. saline | 4 | 128 ± 2 | 32.3 ± 3.1 | 7.7 ± 1.3 | |
i.v. DAMGO | 0.15 mg/kg/h | 5 | 125 ± 2 | 22.3 ± 1.2 | 2.6 ± 0.1 |
i.v. DAMGO | 0.3 mg/kg/h | 5 | 127 ± 1 | 25.4 ± 3.2 | 4.2 ± 1.0 |
i.v. DPDPE | 0.3 mg/kg/h | 4 | 132 ± 3 | 30.3 ± 3.0 | 6.2 ± 2.2 |
i.v. U50,488H | 0.5 mg/kg | 3 | 135 ± 5 | 23.0 ± 1.4 | 30.2 ± 6.9 |
i.v. U50,488H | 1.0 mg/kg | 5 | 135 ± 3 | 44.3 ± 6.2 | 15.9 ± 4.4 |
i.c.v. saline | 3 | 131 ± 3 | 28.9 ± 3.0 | 14.7 ± 4.7 | |
i.c.v. DAMGO | 0.003 mg/kg/h | 6 | 129 ± 2 | n.d.1-a | 6.2 ± 0.6 |
i.c.v. DAMGO | 0.03 mg/kg/h | 7 | 132 ± 2 | 31.6 ± 2.7 | 17.7 ± 2.4 |
i.c.v. DPDPE | 0.01 mg/kg/h | 5 | 134 ± 2 | 36.1 ± 2.8 | 33.0 ± 12.3 |
i.c.v. DPDPE | 0.03 mg/kg/h | 4 | 135 ± 2 | 31.7 ± 6.6 | 15.0 ± 10.3 |
i.c.v. U50,488H | 0.06 mg/kg/h | 6 | 129 ± 3 | 44.5 ± 7.2 | 17.3 ± 5.4 |
↵1-a n.d., not determined.